31023203230 has 32 divisors (see below), whose sum is σ = 58857127200. Its totient is φ = 11740897152.

The previous prime is 31023203207. The next prime is 31023203269. The reversal of 31023203230 is 3230232013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 31023203198 and 31023203207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41256 + ... + 252484.

It is an arithmetic number, because the mean of its divisors is an integer number (1839285225).

Almost surely, 2^31023203230 is an apocalyptic number.

31023203230 is a deficient number, since it is larger than the sum of its proper divisors (27833923970).

31023203230 is a wasteful number, since it uses less digits than its factorization.

31023203230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212028.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 31023203230 its reverse (3230232013), we get a palindrome (34253435243).

The spelling of 31023203230 in words is "thirty-one billion, twenty-three million, two hundred three thousand, two hundred thirty".